body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f4f4f9;
    margin: 0;
    padding: 0;
}

nav {
    background-color: #333;
    color: white;
}

nav ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
}

nav ul li {
    padding: 15px 20px;
}

nav ul li a {
    color: white;
    text-decoration: none;
    transition: color 0.3s ease;
}

nav ul li a:hover {
    color: #ffc107;
}

.container {
    max-width: 1200px;
    margin: 30px auto;
    padding: 20px;
    background-color: white;
    border: 1px solid #ddd;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h1 {
    color: #333;
    margin-bottom: 10px;
    text-align: center;
}

p {
    color: #666;
    line-height: 1.6;
    text-align: center;
}

.box {
    border: 1px solid #ccc;
    border-radius: 5px;
    padding: 20px;
    margin-bottom: 20px;
    background-color: #f9f9f9;
}

.box h2 {
    margin-top: 0;
    color: #555;
}

label {
    display: block;
    margin-bottom: 5px;
}

input {
    width: 100%;
    padding: 8px;
    margin-bottom: 15px;
    border: 1px solid #ccc;
    border-radius: 3px;
}

button {
    padding: 8px 15px;
    background-color: #333;
    color: white;
    border: none;
    border-radius: 3px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

button:hover {
    background-color: #555;
}

.feedback-window {
    border: 1px solid #ccc;
    border-radius: 5px;
    padding: 10px;
    margin-top: 10px;
    background-color: #e9f7ff;
    color: #333;
}    